https://github.com/jenkinsci/warnings-ng-plugin/blob/master/doc/Documentation.md

Second configure steps wiped out build dir and the the package target was not build afterwards.

This reverts commit 19f06d8f.

These jobs running on envinf1 currently fail.

Increasing the gate limit.

`$WORKSPACE` variable is correctly substituted when using double quotation marks.

Also move environment variables setting in Jenkins config.

`id`s in `recordIssues` have to be unique.

See implementation in Jenkins library:
https://github.com/ufz/jenkins-pipeline-library/commit/c290e5beebb1333643be40a4a83a8184c173b6e4